Validation of sea ice concentration
Bulletin date: 2021-12-16
Model vs. observations, sea ice class contingency tables
Date: 2021-12-10:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14572 |
6211 |
1302 |
403 |
209 |
155 |
197 |
0 |
| OW |
0 |
10 |
185 |
132 |
96 |
107 |
26 |
0 |
| VODI |
0 |
11 |
104 |
119 |
130 |
150 |
61 |
0 |
| ODI |
0 |
5 |
45 |
71 |
97 |
144 |
134 |
0 |
| CDI |
0 |
8 |
20 |
77 |
94 |
216 |
454 |
35 |
| VCDI |
0 |
3 |
46 |
62 |
150 |
411 |
6597 |
5310 |
|
...date precedes bulletin
|
Date: 2021-12-14:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14528 |
6218 |
1438 |
386 |
187 |
147 |
111 |
0 |
| OW |
0 |
25 |
206 |
127 |
105 |
117 |
9 |
0 |
| VODI |
0 |
17 |
88 |
109 |
116 |
199 |
54 |
0 |
| ODI |
0 |
8 |
54 |
55 |
87 |
207 |
136 |
0 |
| CDI |
0 |
3 |
30 |
55 |
69 |
225 |
603 |
12 |
| VCDI |
0 |
0 |
35 |
75 |
108 |
271 |
6780 |
5159 |
|
...date precedes bulletin
|
Date: 2021-12-16:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14976 |
6160 |
1097 |
319 |
168 |
100 |
139 |
0 |
| OW |
0 |
27 |
204 |
150 |
76 |
66 |
24 |
0 |
| VODI |
0 |
10 |
90 |
144 |
149 |
127 |
83 |
0 |
| ODI |
0 |
7 |
44 |
77 |
102 |
143 |
144 |
0 |
| CDI |
0 |
6 |
24 |
61 |
100 |
153 |
479 |
7 |
| VCDI |
0 |
7 |
40 |
78 |
134 |
354 |
6651 |
5439 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14976 |
6159 |
1130 |
370 |
179 |
107 |
143 |
0 |
| OW |
0 |
26 |
156 |
129 |
91 |
64 |
38 |
0 |
| VODI |
0 |
12 |
102 |
111 |
129 |
130 |
97 |
0 |
| ODI |
0 |
6 |
47 |
86 |
92 |
138 |
129 |
0 |
| CDI |
0 |
7 |
24 |
58 |
106 |
156 |
510 |
8 |
| VCDI |
0 |
7 |
40 |
75 |
132 |
348 |
6603 |
5438 |
|
Date: 2021-12-20:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14482 |
5929 |
934 |
450 |
214 |
176 |
159 |
0 |
| OW |
0 |
23 |
120 |
131 |
78 |
79 |
88 |
0 |
| VODI |
0 |
9 |
58 |
93 |
122 |
168 |
123 |
0 |
| ODI |
0 |
3 |
15 |
33 |
99 |
289 |
210 |
0 |
| CDI |
0 |
0 |
17 |
18 |
58 |
288 |
580 |
40 |
| VCDI |
0 |
0 |
23 |
41 |
62 |
244 |
5705 |
6998 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14482 |
5871 |
870 |
467 |
224 |
251 |
195 |
0 |
| OW |
0 |
59 |
131 |
106 |
71 |
133 |
84 |
0 |
| VODI |
0 |
20 |
70 |
82 |
92 |
182 |
154 |
0 |
| ODI |
0 |
8 |
38 |
40 |
65 |
166 |
197 |
0 |
| CDI |
0 |
6 |
14 |
16 |
77 |
221 |
465 |
51 |
| VCDI |
0 |
0 |
44 |
55 |
104 |
291 |
5770 |
6987 |
|
Date: 2021-12-22:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14162 |
5878 |
1002 |
405 |
236 |
135 |
112 |
0 |
| OW |
0 |
18 |
124 |
158 |
114 |
65 |
77 |
0 |
| VODI |
0 |
9 |
40 |
112 |
153 |
127 |
95 |
0 |
| ODI |
0 |
4 |
15 |
40 |
114 |
186 |
169 |
5 |
| CDI |
0 |
6 |
9 |
25 |
72 |
331 |
418 |
145 |
| VCDI |
0 |
5 |
18 |
55 |
47 |
415 |
6113 |
6945 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14162 |
5817 |
937 |
378 |
236 |
162 |
180 |
0 |
| OW |
0 |
61 |
130 |
153 |
96 |
50 |
55 |
0 |
| VODI |
0 |
16 |
72 |
106 |
154 |
172 |
88 |
0 |
| ODI |
0 |
7 |
24 |
56 |
102 |
218 |
153 |
3 |
| CDI |
0 |
7 |
16 |
33 |
76 |
247 |
341 |
101 |
| VCDI |
0 |
12 |
29 |
69 |
72 |
410 |
6167 |
6991 |
|
Date: 2021-12-24:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
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